Milk-pasteurizing system



May 1, 1928. 1,668,316

- R. HORTON MILK PASTEURI ZING SYSTEM Fi June 21. 1926 Sheets-Sheet 1 FILTER-5 a- Born 5152' W/TM'FSS I INVENTOR )g A? PH Mmmw A TTOR/VE VS May 1. 1928. 1,668,316

R. HORTON MILK PASTEURIZING SYSTEM- fiffi [T ed 21.. 1926 s Sheets-Sheet 2 R. HORTON MILK PASTEURIZING SYSTEM Filed June 21. 1926 3 Sheets-Sheet 3 m BY v A TTORNE YS Patented May 1, 1928.

UNITED STEATiESi RALPH HOTRTON, OF "NEW YORK,"N, 'Y.

MILK IASTEURIZING "SYSTEM; i

I Application filed 511115121,

This inventionrelatesitozmilk.Pasteurizing systems, and more particularly to adisehargr ing device for rotary positive milku'holders in such xsystems..=

5 Thedasteurization.10f. milk effected by heating the milk. to: a critical. L temperature which :is usually .betiveen;.:138:- to; 145 E, and then 'holding the heatedanilk at this temperature. for a definite; period. which ,is

usually taken as thirty minutes. Theseustomary: procedureuis tor iconduct: milk. from a storage zreservoir lLOE't heaten Where the lwW milk is heated; to v a Pasteurizing temperature. o The-.heated milk isrthenidelivered to a mill:holder;iwhiohdioldsthe milkat a Pas.-

teurizing temperature ion the prescribed period oii-time Atteinztheunilk has been Pasteurized and .is ready. vtonbe. discharged froinn :tli'eizPasteuirizing oholder, it Messential that the treated milk shouldmnot. come into contact. with. .unsterilized: apparatus or becomei. mixed; .With :.:uni-Pas.teurized= milk. lvli'eirivalves and intricate parts are used. to controlothenfiowand .the. discharg e, of the -lE'a-steurized. =1nilk,.L-.it is .diffic ult to .mainta-in the aforesaid) parts in a sterilized: condition.

Moreover; any tank vwhich has a valve must have-a valve seat with. the; consequent result that. somerleakagie; 012 seepage 0t 'umP-asteuriized milkioc'enrsivanound the; aforesaid :seat. .Asathe va'lve'isusually located at a pointin the tank-tor holder which is difficult, if not impractical toaheat; theuntPaste-urized milk which leaks orseeps through; the valve is not subjected toethesamehheat treatment as the milk iinnthentankeor holder: Any contaminatedxinilk. which seepso-through he valve Will. J be. mnafl'ected by the holding 401 Pasteurization treatment, and Wilhnasthe tank -isemptied1reecontaminate the Whole body of millnf. Oii' course, under the aforesaid conditions: the benefit of. .the' -Pasteurization trea.tment..-is absolutely destroyed and vi illfittetim The primary: object of theinventionis to eliminate: any. possibility of recontamination 0fl P8JSlLBL1TlZeCl milk atnthe -point of iCliS- chargein milk holder;

Another object ofthe invention is to pro- -videx-a 'milkrholder particularly one of the positive rotary type; with an automatic si- .phonvdischarge.

Theiinvention -.Will be best understood by 1926." Serial-1N0; 117,363..

reference to :the accompanying; drawings forminga part of this specification, and in. which Fig.1 is a diagrammatic viewof a Pass teurization systemof preferred type;

Fig.1 2 shows a plan View of the positive rotary milk holder illustrated in Fig.1 1;.

Fig. 3 is an elevational view of one of the compartments of the milk holder showing an i similar parts throughout the accompanying drawings The Pasteurizing system herein shown is one olithegra itytype, but my invention is not limited touse with .this'type oi? system as it is equally adaptable to any of the Wellknown' milk Pasteurizing systems. Inthe system. shown Min Fig. 1 the raw milk is pumped to a storage. reservoir R atthe. uppermost 'leveLoli-the system; From this reservoir the milk runs .by.;.gravity= to the rest-of thesystem, firstpassing:through a heater. Heof any approved type'ivhere it is heated to a Pasteurizingtemperature." The heated milk. is conducted from the heaterto a milk holder P bymeansof an approved feed system. 1F. Theholder P is herein. depicted as. a continuous positive rotary ,one with heating jackets,- butany preferred holdermay be provided with my impnoved discharging i'nechanisn'n The rotary multi-compartment tholder revolve-s about an axis A {seewFign 2) and :While in motion, each. compartmenh is successively .hlled by the Cl1Llg.lI1g.-(leVlCB" G with milk heated to a Pasteurizing temperature. .The heated milk. isheldi'in each of the thus filled compartments for the prescribed :PGIlOCl; for example thirty minutes, at a Pasteurizing temperature By the time thezholder has turnedthro-ugli a part of a .circle-so-- that -tl1e filled compartment has reached: a stationary discharge cam or tripper 1).- this .cam strikes a .projectiom 1i on latch L so as to trip or release an oscillatable siphon discharge tube S which drops into a discharge tank T. The siphon tube S is substantially V-shaped with the exterior leg thereof lower than the interior leg. The milk immediately begins to flow through the siphon tube due to the head of liquid above the open end 13 01 the exterior leg. The flow continues even after the level of the liquid falls below the joint S of the siphon tube because a siphon has been established. As the open end let of the interior leg tits in a depression or sump, substantially the entire compartment is emptied during the travel past tank T. As the holder P is rotating continuously, each compartment is successively filled by the charging device C with milk heated to a Pasteurizing temperature, then held for the Pasteurizing period at a Pasteurizing temperature, and finally emptied into tank T. The apparatus functions continuously and automatically.

After the discharge of any compartment, a roller 19 on a projection 9 positioned on the underside of the exterior leg oi the siphon tube strikes a stationary cam 10 at the end of tank T which returns the tube to an inoperative latched position. The open end 13 of the exterior leg strikes the underside of tongue 11 of the latch and rotates it upwardly about bar 12. l/Vhen the end 13 has cleared the tongue, the latter, due to gravity, drops back into a latched position against stop 15. The exterior leg then descends and engages the tongue so to be held in an inoperative latched position. In this position the open end 14 of the interior leg is adjacent to the top of the compartment so that no milk can enter this leg while the compartment is being filled during its passage by charging device C.

In order to prevent any leakage at the point where the siphon tube passes through the walls WV of the jacketed tank a ground joint is formed between a nipple 2 positioned in the wall of the tank and jacket and a collar 3 secured to the connecting tube 4 (see Fig. 5). A spring 5 compressed between the jacket wall 6 and a washer 7 forces the connecting tube outwardly so as to maintain a tight joint at 16 between the nipple 2 and the collar 3. A union 8 is provided at the outer end of connecting tube l to facilitate the assembly and dismantling of the siphon tube. As this tube has no valves or intricate parts in its construction, there is no possibility of leakage or seepage of un-Pasteurized milk to exterior parts thereof. Any milk which leaks through the ground joint falls upon the floor. Consequently, all possibility of recontamination of the Pasteurized milk with Lin-Pasteurized milk during the discharge of the milk holder is eliminated. It is to be noted that with my improved siphon discharge no valves, intricate parts, or the like are used so that no leakage or seepage can occur at valve seats or the like, thus eliminating all possibility of re-contamination of the Pasteurized milk.

It will be further observed that my invention provides a milk holder with a discharge device which is simple in construction and operation, which is economical to manufacture, which is easily assembled and dismantled, and which is absolutely sanitary.

Various modifications may be made without departing from the nature of my invention as defined in the appended claims.

1 claim: 7

1. In combination a milk holder and a siphon means for discharging the holder, said siphon means being oscillatably mounted in the side of said holder below the milk line, one leg of said siphon means being positioned within the holder and having its open end, when the tank contains milk up to the milk line, held above said milk line, said open end of said leg in the discharging position occupying a. position adjacent to the lowest part of the holder, the other leg of said siphon means being positioned outside of the holder and, in the discharging position extending in a downward direction to permit gravity discharge through said siphon means of the entire contents of the holder.

2. In combination a milk holder and a siphon means for discharging the holder, said siphon means being oscillatably mounted in the side of said holder below the milk line and consisting of two legs joined to each other by an oscillatable connection so, as to include an angle between them, one leg of said siphon means being positioned Within the holder and having its open end, when the tank contains milk up to the milk line, held above said milk line, said open end of said leg in the discharging position occupying a position adjacent to the lowest part of the holder, the other leg of said siphon means being positioned outside of the holder and, in the discharging position extending in a downward direction to permit gravity discharge through said siphon means of the entire contents of the holder.

3. In combination, a milk holder, an oscillatable siphon tube mounted in the side of said holder, and means to normally hold the siphon tube in an inoperative position, the said means being adapted to disengage the siphon tube into a discharge position.

A. In combination, a multi-compartment milk holder rotatably mounted, an oscillatablc siphon tube mounted in the exterior side of each of said compartments, a latch secured to the side of each compartment to hold the siphon tube mounted therein in an inoperative position, a stationary tripper adapted to disengage each latch as it comes in contact therewith so as to release each 1 a latch secured to the side of each compartment to hold the siphon tube mounted therein in an inoperative position, a stationary tripper adapted to disengage each latch as it comes in contact therewith so as to release each siphon tube and thus cause the discharge of each compartment, and means to return each siphon tube to an inoperative latched position.

In testimony whereof I have hereunto set my hand.

RALPH HORTON. 

